cc -O2 -pthread -I/usr/local/include  -Wall -Wextra -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations libintl/dgettext_l.c -o libintl/dgettext_l -D_POSIX_C_SOURCE=202405L  -lm -lpthread -lrt -L/usr/local/lib  -lintl -lcrypt
libintl/dgettext_l.c:5:42: error: unknown type name 'locale_t'
    5 | char *(*foo)(const char *, const char *, locale_t) = dgettext_l;
      |                                          ^~~~~~~~